Asphalt-press.



G. E. WHITNEY. ASPHALT PRESS.

APPLIGATION FILED 00T.30. 1906. 1,007,881. Patented Nov. 7, 1911.

8 SHEETS -SHEET 1.

- 0 4 1 v INVENTOR N 94% 7 I fearfeIM/iz; 1

I ATTORNEY} G. E. WHITNEY.

ASPHALT PRESS.

APPLIUATION FILED 0013.30, 1906.

Patented Nov. 7, 1911.

8 SHEBTS-SHEET 2,

WITNESSES ATTORNEYS INVE 0R G. E. WHITNEY.

ASPHALT PRESS.

APPLICATION FILED 00130, 1900.

Patented Nov. 7, 1911.

8 SHEETSSHEET 3.

G. E. WHITNEY.

, ASPHALT PRESS.

APPLICATION FILED 0GT.30.1905. O 1,007,831, Patented Nov. 7, 1911.

a SEEETS-SHEET 4.

WITNESSES: I m I l OR ATTORN EYS G. E. WHITNEY. ASPHALT PRESS.APPLIOA'I'I0;I PILED 00T.30, 1906.

Patented Nov. 7, 1911.

8 SHEETS-SHEET 5.'

INVENTOR Ga rgeiZ'W/firey 5320 3M ATTORNEYS WHITNEY. ASPEALT PRESS.-APPLIUATION r' mnn 001230, 1906.

Patented Nov. 7, 1911.

8 SHEETS-SHEET 6.

v 1 INVENTOR I $601965 Q5/7170? i w r W A-T BRNEYS 1 G. E. WHITNEY.

ASPHALT PRESS.

APPLICATION FILED 0GT,30,1906.

Patented NOV. 7, 1911.

8 SHEETS-SHEET 7v WITNESSES:

adawzmwy INVENTOR ATTORN EYS G. E. WHITNEY.

ASPHALT PRE$S. 'APPLIOATION FILED 00130. 1906.

. Patented Nov. 7; 1911.

. B SHEETSSHEET 8.

liq 23, zzyza. 26;

the line h 6 of Fig.

crooner. wnrrnnr, or roriirnns, new

YORK, ASSIGNOE TO THE INTERNATION AL GGMPANY, OF HARTFORD, CONNECTICUT,A: CORPQRATION F i301!- Specification of Letters ?atent.

A$32HALT-1FRESS ltatcnted 'hiov. "2 1911.

Application filed October-30, 190a Serial No. 341,335.

To all whom 'it may concern:

Be it known that l, GEORGE E. lvnirnnr, a citizen of the United States,residing at Yonkers, in the county of ll estchester, State of New York,have inventedan Improvement in Asphalt-Presses, of which the followingdescription. in connection with the are not restricted to use in suchtype of mechanism, but are or" general application.

in the practice of my invention I am enabled so to compress asphaltic orother composition as to obtain-very compact and'solid blocks therefrom,the comminutedparticles of which such blocks are usually composed,

in. conjunction with a cementitious binder, being brought into close andpermanent union, so that'much or all air may be expelled from thecomposition during the iressins action. l am further enabled b l o myinvention. and with the expenditure of substantially minimum amount ofpower,

o compress a plm'ality of blocks during a single cycle of movements.llhese an-dmany other desirable results are secured by my invention, onetype or embodiment of which is herein set forth in'order that theprinciples and general nature of the same may be unmod, and is shown inthe accompanying dra'u wherein,-

Figure 1 a vertical central section of a press presenting one embodimentof my invention. taken on the broken line lf 'l of Fig. 3, the operatingparts being shown mostly in, elevation, and in this instance a pluralityof molding or block forming means being shown; Fig. 2 is a sideelevation the same type of press; Fig. 3 1s a plan thereof, looking fromthe left in Fig.1.; a portion of the framing being shown in elevation.Fig. 5 is a' vertical central section through certain parts of theoperating mechanism that mounted upon. the main driving shaft; Fig. 6 isa vertical section upon 5, looking from the right and showing one typeof means for throwing the operating mechanism out oi? action when undueresistance is encountered view thereof; Fig. l is an end elevationin thepressing action; Fig.7 is a vertical section with parts in elevation ofa portion of the preferred operating means for one of the plungers,showingone type of maximum pressure support therefor. Fig. 8 is a detailshowing operating mechanism herein represented as a cam for operatingtwo of the mold feeding members and for imparting the ejecting movementto two of the plungers. which are typilied'in this form of press; Fig. 9is a detail sectional view on the line 9-9 of Fig. 1, and showing inplan a plurality of mold :leeding members and a port-ion of one form Ofoperating means therefor; Fig. 10 is a section upon the line 10 -10 ofFig. 1 looking down; Fig. 11 is a horizontal sectional detail on theline l1-1.1 of Fig. 2 with parts in elevation and showing a portion ofthe block discharging means; Fig. 12 is a plan view of apair o'lnterengaglng lovers of the maximum pres= sure sustalmng means; l lg'.13 is an endelevation of the two part link for yicldingly supporting thesaid lntercngagmg. lcversyFig. 1

14 is a side elevation of theouter members of said two part link, theposition of the. inner member being indicated in dotted lines. Fig. 15is arr-end elevation of the' in- 'ncr member-of said two pa'rtlink. Fig.16

is a side elevation of said inner member; Fig. 17 is a perspective viewof said two part, link; and, Fig. 18 isa horizontalscction through amoldmember or block and representing in plan a form of liner back permittingready removal of the liner. v I

The press herein shown.v and selected-as embodying a type of myinvention, particularly adapted for compressing what are commonly knownas asphalt paving blocks, ordinarily composed of trap rock and acementitious asphaltic binder; So tar as the broad features of myinvention are concerned, it is' immaterial what composition be employed,and I am in .nowise limited to a press employed peculiarly. for thepurpose stated, as many of the features thereof-are moved and others.substituted.

horizontally disposed abutments 2, as shown in Fig. l,-one of whichispreferably provided for each molding mechanism provided more than one beemployed. Each of said openings may taper slightly upwardly, and theopenings beneath may be correspondingly sloped to facilitate the passageof the material. Each abutment is herein shown as fixed, being held inposition by vertical tie rods or bolts 3, passing through the abutmentand through the base, 4, of the press, nuts, 5, being preferablyprovided upon either end of each bolt or tie rod. Inasmuch as thematerial to be compressed is preferably subjected to very heavy pressurethe parts should be strongly constructed to endure heavy strains.

If the press be vertically arranged, beneath each abutmentyQ, 2 if aplurality thereof be employed, is provided a mold member or block 6,preferably having mold chambers 7 therein, e'ach preferably havingremovable walls or mold defining members 7, 7 (Fig. 18). Preferably eachwall comprises a liner back 7 and a liner 7". In order to permit theremoval of worn liners during the operation of the press,.I may, asindicated in Fig. 18, form certain of the liner backs, and as hereinshown the side liner backs, of sufficient length to receive a pluralityof liners 7", which may be secured by screws or otherwise to the backs.\Vhen said side liner backs arein the position shown one liner of eachof said backs is entirely exposed beyond the mold member or block,thereby permitting the removal of such'liners, if worn, during theoperation of the press and the substitution of unworn liners; Said backsmay then be slid forward into the mold member or block until thesubstituted liners are in operative position, when t-he'opposite'liners, being fully exposed at the other side of the mold member orblock, may be re- As herein shown, eachmold member or block contains twomold chambers or molds, but it is ap'- parent that'a separate moldmember or block may be provided for each mold chamber or mold.

Between the abutment or abutments, 2, 2 and the mold member ormolds-therein is preferably mounted a mold feeding member,

illustrated I have shown two molds with their related mold feedingmembers and plungers and I have illustrated the connec tions from themain driving shaft to two other molds and cooperating parts (not shown).That is to say, from the same driving shaft, I conten'iplate-in thistype of my invention operating fourdiflercnt presses, each of which isherein shown as adapted to compress material once during each pair ofpresses is independent of the other pair, so that if it be desired todisconnect one pair or to throw it out of action,

while continuing the other in action, this may readily be done, it beingapparent that if an accident happen to one pair of presses this need notinterrupt the action of the other.

Preferably upon the horizontal main driving shaft 9 (Figs. 1 and 3) aremounted two cams 10, each of which is herein shown as'a dapted tooperate two mold feeding members, but they may be otherwise mounted thanon the main driving shaft and if desired a separate cam may be employedfor each mold feeding member.

Referring to Fig. 1, in this embodiment of the invention the moldfeeding member, 8, for the right-hand press is connected by a horizontallink, 11, to a Vertical lever, 12, provided with a pivot, 13, (Figs. 1and 8) having suitable bearings in the framework of the machine, thelower arm thereof having thereon a roller, 14, adapted to travel in acam track 15, provided preferably in one face of the cam, 10. The moldfeeding member, 5, for the left-l1and press is here shown as connectedby a forked link connection, 11, to a vertical lever, 12, provided witha pivot, 13, having bearings in the.

' 15, in the path of the cam, 10. The construction'of the cam track ispreferably such that.

in one rotation of the main driving shaft each of said mold feedingmembers is given a complete reciprocation, as will be more fullydescribed. Adapted to operate Within each of the molds, 7, 7 (Fig. 1) isa vertically moving plunger, 16, 16 preferably provided at itslower endwith a fork, 17, 17 within which is received the head, 18, 18 of theupper member, 19, 19 of a toggle lever,

which I find to bG WGll adapted. to the attainment of the resultsdesired in this type of press, and which I prefer to employ in {thisembodiment of my inventiornsaid "fork,-

17, 17 being providedas a ready means of positioning the upper member ofthe toggle mechanism and to shield the underlying parts from thematerial that isbeing operated upon. While the toggle or otheroperating; mechanism for the plunger or plungcrs mayin certain aspectsor types of my invention be unyieldingly,supported in the framework ofthe press or elsewhere, 1 prefer to support the same yieldingly andpreferably so that when a certain predetermined maximum pressure hasbeen applied thereby to the block or blocks subjected to the moldingaction, the plungers and the supporting; mechanism may yield while stillmaintaini'ng said predetermined maximum pressure until the completion ofthe pressing action, whereby the said block or blocks Will not besubjected to an excessive compression and permitting the plungers toyield if? foreign substance of too great density finds its Way into themold chambers. This may be accomplished in many different ways and bymany different types of apparatus, but I may conveniently employ theform of mechanism herein shown. To that end, the othermember 20, 20 ofeach toggle lever is preterably pivoted to a lever, 21, 21 pivoted at38, 38 in the machine frame, the pair of levers shown being supported attheir opposite ends upon the head, 23, of a'tWo-part link, 24, the otherhead, 25, thereof, being received in a socket formed preferably at oneend of a horizontal lever, 26,'pivoted at 27, in the machine frame, theend of the lever having connected therewith the connecting rod, '28, ofa piston, 29, mounted within a. cylinder, 30, to which steam or otherfluid is constantly supplied by a pipe connected with the opening, 31,in the upper head thereof.

As shown in Figs. l3l7 inclusive, the two-part link, 24, is composed ofan outer and an inner member. The outer member, 24, comprises theelongated head, 25, preterably having a rounded lower surface to bereceived in the socket in the lever, 26, and having uprising therefromtwo end members,'24t, preferably having rounded upper ends to bereceived Within sockets in the spaced end portion of one of the levers,21,

(see Figs. 1 and 12). The inner-member 24 has a socket in ts enlargedlower end adapted to be received upon the upper side a socket of theouter lever 21, (see Fig. 12).

In the present embodiment of the invention a two'part link havingrelatively movable members is employed to permit movement of eitherlever 21, irrespective of the other. It is apparent that said levers 21may be otherwise connected to the cylinder, 30, if such form oi? maximumpressui-e support is employed. v w

in the type of press shown the toggle mechanism for each press isconnected at 32, 32 to a horizontal link, 33, connected at 34, to aneccentric rod, 35, of an eccentric strap, iitr operated by an eccentric,3 pretorably mounted upon the main driving shaft, 9. Thus, in the typeof press illustrated I mount. directl u on said drivin PD shaft theeccentric mechanism for operating the plungers and thepreviouslydescribed camf mechanism for operating the mold feeding members. It is,however, within the scope of my invention to mount said operating partsother than as descrlbed and to impart the desired movement to the?plungers other than by an eccentric mocha-- nism and said plunger-s maybe operated by separate driving; connections.

in the type of press shown I contemplate, as already stated, employingtwo orother number of additional plungers antt'th'eir relnted'parts, andmay conveniently connect them for operation with the said main drivingshaft, 9. In so doing, there prefen ably provided another eccentricmechanism (see Fig. 1) upon the outer end of-the eccentric rod, 38,- ofwhich is provided a.

suitable connection, 39, for operating said two other plungers, ifsuchadditional numher be employed.- vVhen two other presses are employed ipreferably provide (Fig. 3)

another cam, 10, for operating the mold feeding members thereof andpreferably so mount said cam as that the tour r other suitable number ofmold feeding members are operated in sequence, as will be morefully-described.

Since, in the present type oft-he invention, the eccentric strapsgitiand 37, and two 'llmS 1,0, are mounted upon the main driving; shaft, 9,ninety degrees apart-it will be observed that as here shown, in onerotation of the main driving shaft,.one movement of compression isimparted to each plunger and. that the eccentrics herein employed are soset that the pressing-strain is brought upon the different ,plungers atdifferent periods respectively in the rotation of the said main driving;shaft. That-is to say, and considering the present type of theinvention, it atwi ro degrees of the rotation of the main driving shaftone. or the plungers is at its highest position 'or position of maximumpressure, then at 180 degrees of rota- 7 said driving shaft the first ofsaid other pair of plungers will have arrived at its highest. positionor position of maximum pressure, and at 270 degrees of rotation of saiddriying shaft the second plunger of the second pair will have arrived atthe corre- 'sponding position. 'It will thus be seen that the strainsinvolved in operating said plungers are preferably equally distributedthroughout the rotation of the main driving shaft. It will be understoodthat Whatever the number of plungers employed, I may, if desired,similarly distribute the strains thereof. The two cams, '10, are hereinshown as so timed in operation that the power required to operate themold feeding members fpr the four presses when that number is employedis preferably equally distributed throughout the rotation of the saiddriving shaft.

When a mold feeding member has been so positioned that the openingtherein is in alinement with the mold and with the corresponding openingin the abutment, thematerial to be compressed will be discharg'ed intothe mold and when the same is filled, movement is imparted to the moldfeeding member, preferably in the manner fer to employ in thisembodiment of the invention, a slow, powerful pressure is imparted tothe plunger or plungersand that at the period of maximum pressure thereis a considerable'dwell so that the bloek is held under maximumcompression for the desired length of time in .order' to compactly pressthe block and to force out of thesame much of the air contained therein.

Although I may accomplish the result in any suitable manner, I, in thepresent type of the invention, operate the plungers by the toggle levers19 19 and 20 20.. At the culmination of the stroke the plunger remainsstationary a sufficient length of time to permit the escape of most ofthe air contained. in the material and to permit the ingredients ofthe-now formed or pressed block to adhere firmly. After each block a hasbeen suitably pressed'the corresponding lun 'er be ins its :withdrawal.In iractice p b h I find it preferable to compress the block to a.:thickness somewhat less than the desired dimension, as upon thewithdrawal of the plunger the material slightly expands. Preferably, andin this type of the invention, just after the commencement of thewithdrawing movement of the plunger,

and therefore after the pressure has been released and-the plunger iswithdrawn beyond the limit of expansion of the compressed block, themold feeding member corresponding thereto is further moved. so as tobring the same into a position such that the compressed block may beejected from the mold, which, in the present instance, is preferablydone by the plunger. As each toggle lever recedes, it may slightlywithdraw from the fork 17 17' of its plunger 16, 16 which follows owingto its own weight, and after the ejecting movement, readily seats itselfupon the head of the upper toggle member owing to the enlarged mouth ofthe fork. Viewing Fig. 1, the compressed block formed by the left-handpress is ejected to the left of the mold feeding member when the same isproperly positioned therefor and the block formed by the right-hand.press is similarly ejected to the-right of the corresponding moldfeeding member when the same is properly positioned. I preferably employthe pressing plungers to eject the pressed blocks and to impart such.ejecting movement I preferably provide (Fig. 1) an extension, 40, 40'near the lower end of each plunger with which cooperate arms, 41, 41 ofbell-crank levers pivoted. at 42, 4-2 in the machine frame, the otherarms, 43, 43 whereof are connected by links, 4A, 44,- (Fig. 8) tolevers, 4:5, 45 pivoted at 46 fl6 in the machine frame and havingpreferably mounted thereon rolls, 47, 47' adapted in this type of theinvention, to be operatedupon by a face cam upon one of the cams, 10. Inthe ejecting movement each plunger is lifted from its toggle but reseatsitselfunder the influence of gravity. It will, of course, be understoodthat the ejecting movement of the plunger or plungers maybe imparted bymechanism not opcratively connected to said cam, 10. hen I employanother pair or other number of additional presses, I preferably providea similar mechanism for imparting the ejecting movement thereto,so

that in practice each of the cams, 10, not only imparts in sequence thedescribed movement to the mold feeding members, but also imparts insequence the described ejectingmovement to the plunger or plungers, ifthe ejecting movement be imparted through the plungers.

When a compressed block has been ejected from the. mold wherein it wasformed, it is received upon the upper face of the mold member, 6, orupon a plate provided thereon, and in this typeof the invention, by theproper movement of the corresponding mold feeding member, is moved transversely of the press and preferably intothc range -(Figs.' 2 and 3) of ahorizontal pivoted arm, 48, ii'eferably provided for each I of thepresses, so that in the preferred oporation the con'ipressiail blocksare delivered correspondingly from each of the presses act upon thecou'iprcssed blocks after their ejection from the molds or presses todischarge them from the machine. 1 herein provide suitable arms. 48, andoperate them 1n any desired manner.

I preferably provide for each press or mold )lfigs. 2 and 3) a quadrantshaped trough or receiver, l9, upon which the compressed block isdelivered by the action of.

the mold feeding member and from. which the same is delivered in thistype of the invention by the action of the corresponding arm, e8, whichis mounted for oscillation upon a vertical rock-shaft, 50, mounted in anupper frame bracket, 51, and a lower bracket, 52, the latter beingsupported by the horizontal. arm, 53, connected to the bracket, 5 f,upon a tie rod or bolt, 3, of the press. The bottom of each trough orreceiver is herein'shown as formed by a plate, 55, which is pref rablyformed separately from the trough and'is bolted in position in anysuitable manner, as shown in Fig. 4. I find it preferable in employingcertain materials to form the bottom of the trough or receiver aseparate and detachable-111cm ber, inasmuch as this part may besubjected to, great wear and may-need to be replaced at quite frequentintervals. As shown 1n 2, said; bottom plate terminates short of oneside of the trough and is located in a horizontal plane somewhat belowtheplane of a plate 56, here shown as directly above an uprightrock-shaft, 50, carrying at its upper end the horizontal. arm, 4:8. The

rock-shaft, 50, has imparted thereto in a manner to be describedmovement ofoscillation upon its axis, so that its arm, 48, is broughtinto a position to be raised against the under surface of the plate, 56,and to the rear of a compressed block that has been delivered upon thetrough or receiver, lit), by the action of the mold feeding member. Thedescribed'position of the arm, 48, is that shown for the right-handpress, viewing Fig. 3. The said focloshaft, 50, has a lengthwise oraxial movement imparted thereto (Fig. i) by the action of a spring, 57,the outer end, 58, whereof, receives the lower end of said'l rock-shaftand the inner end whereof is connected to one arm, 59, of a leverpivoted at (30 (Fig. 2), the upper end whereof is connected to one endof a link, 61, (having therein an adjusting means, 62), the other end ofwhich is connected (Fig. 2) to a bell crank lever, 63, mounted upon thesaid rock-shaft, 50. The other end of said bell crank lever, 63, isconnected by a rod, 64, to a link, 33, of the plunger operatingmechanism. The described construction is such that as the arm, l8, isbrought into the position shown for the right-hand press in Fig. 8, thespring, 5?, is by the action of the lever arm, 59, buckled or bentsothat the rock-shaft, 50, is moved vertically and the arm, (l8, thereonis brought into contact with the lower surface of the plate, 56. Atthe-proper time, a further movement of partial rotation is imparted tothe rockshaft, 50, and the arm, 48, is thereby swept along the uppersurface of the trough ()1.1'8- ceiver over the plate, 55, therebyejecting the pressed block from the same preferably upon a travelingbelt, the spring, 57, then assuming such position that the rock-shaft,50, is permitted to descend and the arm, t8, is thereupon in its furtherincrement carried beneath the plate, 55.

l contemplate imparting a heavy pres sure in the formation of the blocksas do scribed. It sometimes occurs, as through the entrance of a notreadily compressible foreign composition into a block or into someportion of the, press, that the material cannot be compressed to thedesired dimensions by such pressure as I may desire to subject thevpressto. I have, therefore, in this embodiment of my invention, provided.means whereby, if undue resistance be met in the pressing. action, thepressing mechanism may be thrown out of operation. That is to say, ifundue strain be brought upon the main drive shaft, 9, the drivingmechanism mounted thereon may be thrown out' of operation. Owing to thefact that the fly Wheel (not shown) carried by the drive shaft rotatesat a high speed, in order to avoid damage to the parts, it is preferableto disconnect or throw out of operation the driving mechanisminstantaneously upon the occurrence of undue resistance of-the characterindicated. 'While for this purpose any suitable means may be provided,I. have herein chosen to illustrate as typifying my invention,electrical means for throwing the mechanism out of operation, one formof which I will. now describe. For this purpose (Figs. 3 and 5) the maindriving gear, 65, to which power is applied, is provided with a, hub,66, carried upon a sleeve, 67, loosely mounted upon the main drivingshaft but adapted to'be clutched thereto by aclutch, 68, of any desiredconstruction, splincd upon the main driving shaft, said driving gear,65, having arms, 69, between which and lugs, 70, extending from the diskcarried by the sleeve, 67, are mounted coiled springs, 71, acting in thenormal operation of the parts to retain the arm, 69 and lugs 70,separated as shown in Fig.6. Upon one of the lugs, 70, is mounted aprojecting stud, 72, suitably insulated therefrom and forming a terminalof an electric circuit and upon the corresponding arm, 69, is mounted asuitably insulated member, 73,

and incompressible non-shearing substances are fed into the feedingopenings provided in the abutments and project into an opening in a moldfeeding member so as to interfere with the normal movement of the samewith relation to the abutment. Under such contingencies, were noprovision made for interrupting the described movement of the feedingmember, serious damage might result. To obviate this result, I have inthis type of the invention, provided mechanism whereby upon meeting anundue resistance a mold feeding member may be thrown out of operation.This may be accomplished in many different ways and by a variety ofmechanisms, but I have herein selected the following means as typifyingone embodiment of the invention. Each cam, l0 (Fig. 5), is preferablymounted upon a sleeve, 74, splined at 75, to the main driving shaft,each sleeve having (Fig. 2) arms, 7 (3, projccting therefrom, betweenthe heads of which and lugs, 77, upon said cam, 10, are

mounted coiled springs, 7 8, of suitable strength, the constructionbeing such that under normal conditions a stud, 7 9, projecting andsuitably insulated'from one of the lugs, 77, is kept in contact with astud, 80,

projecting and suitably insulated from oneof the arms, 76, said stud, 79, and stud, 80, being suitably connected in circuit so that in. thenormal operation of the parts the circuit is uninterrupted, butpermitting the throwing of the driving mechanism outof gear in the eventof an undue obstruction being presented to themovement of a mold feedingmember.

I have thus provided and disclosed one embodiment of means whereby whenundue strain is brought upon the driving shaft, or when undue resistanceis met by any one of the mold feeding members, the plunger-s may bethrown out of operation and the parts controlled by the cams, 10, may berendered inoperative. It is within the scope of my invention to providesimilar or other means at such parts of the press as may be desired toaccomplish a, similar result.

Any suitable mechanisn'r may be employed to cooperate upon the breakingof a circuit in the manner described, to throw the main driving gear outof operation, but as effective for the purpose and referring to Fig; 5,upon a support, 81, for the main driving shaftis mounted a; cylinder,82.

having openings, 83, at one end thereof.

The upper opening is adapted to supplied in any desired manner withsteam or other suitable fluid, and the lower opening is preferablyconnected bypiping to the cylinder, 30, formingin this type of theinvention, a part of the maximum pressure means. Thus, steam or otherpressure acts constantly upon the rear end of a piston, 84, mountedwithin tlie cylinder for longitudinal movement therein, but locked fromoutward movement by the hooked end of a lever, 85, pivoted at 86, andconstituting an armature normally held in the position shown in Fig. 5,by a magnet, 87, forming a part of the electric circuit referred to. Acoiled spring, 88, is employed, the strength of which is insufiicient todepress the armature when the circuit remains unbroken. When, however,the circuit has been broken in the manner -previously described, saidspring depresses the long arm of the lever, 85, raising the outer hookedend thereof out of engagement with the piston, whereupon the latterismoved outwardly along a guide way, 89, shown more clearly in Fig. at.Connected with said piston is a horizontal link, 90, pivoted to avertical lever, 91, which is connected with a sleeve. 92, splined uponthe'main driving shaft. The outward travel of said piston, 84, movessaid sleeve, 92, to the left, viewing Fig. 5, and thereupon through anypreferred connections, releases the clutch from engagement with theprojecting member or web, 93, formed with said sleeve. (17. leaving thesaid sleeve and the main driving gear, 65, loose upon the main driveshaft, 8. so that power applied to said gear, 65, no longer drives theshaft.

One embodiment or type of my invention having thus been described, andthe operation thereof sufficiently set forth, it will be understood thatwhcnl employ two presses, the same preferably and as herein shownoperate in alternation and when I employ more than two presses, as, forexample, four, I preferably operate them in sequence, as described, soas to distribute the power required to operate the same equally upon themain driving shaft. Considering two presses, as fully shown inthedrawings, it will be understood that as one of the plungers is receding,the mold therefor begins tofill. \Vhen the mold has been filled. in thisembodiment of the invention, sliding movement is imparted to the moldfeeding member, so that the supply of material is then cut off and apressure receiving portion no ne ooasai block: is delivered upon theupper face of the mold member, @Wing to the described operation out theplung -rs, and their correlated parts in alternation in this type of theinvention, will be understood that the foregoing cycle of operationsimparted to each plunger and. its correlated mold teeding memberlikewise imparted to the other plhnger and its co-related mold feedingmember 'of the same pair of presses and that each movement of oneelement of one of the presses undergone at a different period of time,and correspondingly at the opposite pt ion of time, by the correspondingelement of the press.

llaving thus described my invention and one entibodiment thereof, 1 Wishit to be understood that Whilel have described the same in detail. andhave employed specific terms in doing so, i have used the terms in theirgeneral and not in their subordinate sense. i.

in the claims hereto annexed.

l. A press of the character described com- ..isi.ng a fixed compressionhea l comprising an abutment, an opposing plunger, means to more, saidplunger toward said head to compress the material therebetween, andelastic fluid actuated excessive compressive movement preventingconnections for said plunger whereby an increase of compressing actionceases when a maximum pressure shall have been attained, saidconnections maintaining an ui'ivarying, predetermined rniun pressure. 2.A press of the character described comprising a fixed abutment, anopposing plunger means to impart an unvarying range of movement to saidplunger provided a maximum pressure beenot exceeded, an elastic :tluidsustained means to maintain a uniform predetermined maximum pressure. t

it, press of the character described comprising a fixed abutment, anopposing plunger, operating toggle mechanism therefor, and elastic fluidsustained yielding supporting means to support said toggle mechanism andadaoted to yield when a maximum plungeipressure is reached, saidsupporting means maintaining a uniform, maximum pressure, 4.. A press ofthe character described, comprising a fixed abutn'lent, an opposingplunger, toggle mechanism to operate the same, and yielding supportingmeans to support said toggle mechanism and adapted to yield when amaxinu'un plunger pressure is reached, but to maintain a uniform,maxinuunpressure.

It press ot the character described comprising a fixed abutment, anopposing plunger, toggle mechanism to operate the same,

am, therefore, not to be lhnitcd and fluid pressure controlled means tosup port said toggle mechanism, with uniform pressure variable indegree.

6. A; press of the character described comprising a fixed compressionhead forming an abutment, an opposing plunger, plunger operating meansto move said plunger toward said head to compress the materialtherebetween, and elastic fluid sustained maximum pressure sustainingand excess pressure preventing connections for said plunger, saidconnections maintaining a predetermined, maximum pressure.

7. A press of the character described comprising an abutment, anopposing plunger, toggle mechanism to operate the same, and pressurecontrolled means to supportsaid toggle mechanism, said means maintaininga predetermined, uniform, maximum pressure.

8. A, press of the character described comprising a 'fixed abutment, anopposing plunger, toggle mechanisms-t0 support the .same, and elasticfluid pressure controlled means supporting said. toggle mechanism with apredetermined maximum pressure.

A press comprising in combination a fixed abutment; a mold; a plungerreciprocable in saidmold to compress material resisted by said abutment;fixed-travel pressure actuating means; transmission means having thecapacity to transmit a portion only of the fixed travelof said pressureactuating means to said plunger; and elasticfluid means having thecapacity to absorb the movement occasioned by the remainder of saidfixed travehsaid elastic fluid means acting as a controller to fix apredetermined maximum pressure transmitted from said pressure actuatingmeans to said plunger.

10. A press of the character described comprising a fixed abutment, amovable plunger cooperating therewith, a mold feed iug member betweensaid abutment and plunger, plunger operating mechanism and elastic fluidsustained yielding supporting means to support said plunger operatingmechanism and adapted to yield when a maximum plunger pressure isreached, and to maintiiina predetermined, uniform, 1naxi mum pressure I.i

11. A press tit the character described comprising fixed abutments, aplu'ality of plungers cooperating in'sequence therewith, mold feedingmembers between said abutments and plungers and movable transversely tothe path of movement ot said pl angers and a single pressure means tosupport said plungcrs and adapted to yield when. a maximum plungerpressure is reached on'- any one of said plungers.

.12. A press of the character described comprising a fixed abutment, anopposing plunger, toggle mechanism to operate the same, and elasticfluid sustained pressure controlled means to support said toggle ablerelatively thereto, a movab e mold feeding member between said abutmentand plunger, toggle mechanism for operating said plunger, meanspositively to operate said toggle mechanism in each direction, andelastic fluid pressure means yieldingly to support said, togglemechanism.

14;. A press of the character described comprising a fixedabutment, ajplunger mov able relatively thereto, operating means therefor, a movablemold feeding member between said abutment and plunger and anelasticfiuid sustained supporting means to support said plungeroperating mechanism and adapted to yield when a maximum plunger pressureis reached, and to maintain a predetermined, uniform, maximum pres sure.

15. A press of the character describedeomprising fixedabutments,plungers acting in sequence movable relatively thereto, operating meanstherefor, movable mold feeding members between said abutments. and

ilun ers and a sin leressure. means tocontrol a plurality of plungersand adapted to yield when a maximum plunger pressure .is reached.

216. A press of the character described comprising a fixed abutment, aplunger movable relatively thereto, plunger operating means therefor, amovable mold feeding comprising fixed abutments, plunger-s movable insequence relatively thereto, plunger operating means therefor, a movablemold feeding member between said abutmez s and plunger having a passagethereth rough. for the passage of the material to be compressed and asingle pressure means to control a plurality of plungers and adapted toyield-when a maximum plunger pressure is reached on any one of saidplungers. 18. A press of the character described comprising a fixedabutment, a mold member,'a plunger movable therein, a mold feedingmember between said abutment and mold member, toggle mechanism foroperating said plunger, positive means to operate said toggle mechanismin each direction,

-to yield when a maximum pressure is her, avplunger movable therein, amovable mold feeding member between the abutment and mold member,plunger operating mechanism, and elastic fluid sustained yieldingsupporting means to support said plungeroperating mechanism andadaptedto yield when a maximum plunger pressure is -reached, and tomaintain a predetermined,

uniform, maximum pressure.

20. A press of the character described comprising fixed abutments, moldmembers, plungers acting in sequence movable therein, movable moldfeeding members between the abutments and mold member, plunger operatingmechanism, and a single pressure means to control a plurality ofplungers and adapted to yield when a maximum plunger pressure is reachedon any one of said plungers.

21. A press of the character described comprising a fixed abutmenthaving a feeding neck, a mold member, a plunger movable therein, amovable mold feeding member between the abutment andmold member, togglemechanism for operating said plunger,

means positively to operate said toggle mechanism in each direction, andyielding supporting means for said toggle mecha-' nism adapted'to yieldwhen a maximum plunger pressure is reached, but to maintain apredetermined maximum pressure.

22. A press of the character described comprising a fixed abutmenthaving a feeding neck, a mold member, a plunger movable therein, amovable mold feeding member, between the abutment and mold member,plunger operating mechanism, and elastic fluid sustained supportingmeans to support said plunger operating mechanism and adapted to yieldwhen a maximumplunger pressure is reached, butto maintain a uniform,predetermined, maximum pressure.

23. A press of the character described comprising a fixed abutment. amold member, a plunger movable therein, a mold feeding member movabletransversely to the path of said plunger and having a mold feedingpassage and a pressure receiving portion, toggle mechanism to operatesaid plunger, means positively to operate said toggle mechanism in eachdirection, and elastic fluid actuated mechanism to support said togglemechanism and adapted to yield when a predetermined, maximum pressure isreached.

24. A press of the character described comprising a fixed abutment, amold member, a plunger movable therein, plunger opera ting mechanism, amold feeding member movable transversely to the path of said it llplunger, and'having a mold feeding passage and elastic fluid sustainedpressure receiving portion, yielding supporting means to support saidplunger operating mechanism and adapted to yield,when a maximum plungerpressure is reached, but to maintain a predetermined, uniform, maximumpressure throughout the pressing action.

25. A. press of the character described comprising a fixed abutmenthaving means to feed the material therethrough, an opposing plungerhaving a fixed range of movement provided a maximum pressure be notexceeded, a mold member within which the plunger is adapted to move, amold feeding member betWe'enthe abutment and mold, elastic fluidsustained yielding supporting means to support said plunger operatingmechanism and adapted 'to yield when a maximum plunger pressure isreached, but to maintain a predetermined, uniform, maximum pressurethroughout the pressing action.

26.. A press of thecharacter described comprising pressure receivingmeans, .a plurality of plunger-s cooperating therewith, cooperating moldfeeding means, means to operate said plungers in sequence, and yieldingmeans to support said plunger operating means and adapted to yield whena maximum plunger pressure is reached but to maintain a maximumpressure.

27. A press of the character described comprising'pressure receivingmeans, a plurality of plungers coiiperating therewith, means to operatesaid plungers out of unison, and yielding means to support said plungeroperating means and adapted to yield when a maximum plunger pressure isreached but to'maintain a maximum pres sure.

28. A press of the cl'la'racter described comprising unyielding pressurereceiving means, a plurality of plungcrs cooperating therewith,cotiperating mold feeding means, means to operate said plungers insequence and yielding means to support said plunger operating means andadapted to yield when a maximum plunger pressure is reached but tomaintain a maximum pressure.

29. A press of the character described comprising pressure receivingmeans, a plurality of plungers cooperating therewith,

plunger operating mechanism, alcver supporting each plunger operatingmechanism, and a single pressure means to control said levers andadapted to yield when a maximum plunger pressure is reached, butmaintaining said maximum pressure throughout the pressing action.

30.1! press of the character described comprising unyielding pressurereceiving means, a plurality of plungers cocperating therewith, a moldfeeding member, a common maximum pressuresustaining means reached.

for said plungers, and means to operate said plungers .in sequence, saidsustaining means operating a plurality of times during the cycle ofoperation of each plunger.

31. press of the character described 70 I comprising pressure receivingmeans, a plurality of plungers coiiperati-ng therewith, plungeroperating mechanism, a lever-supporting each plunger operating"mechanism and a single pressure means to control said levers and adaptedto yield when a maxi mum plunger pressure is reached, said sustainingmeans opera ting a pluralityof times during the cycle of operation ofeach plunger. 32 A press of the character described comprisingunyielding pressure receiving means, a plurahtyof plungers cocperatmgtherewith, means to operate sald plunger-s out of unison, a leversupporting each plunger operating mechanism and a single pressure meansto control said levers and adapted to yield When a maximum plungerpressure is reached, said sustaining means operating a plurality oftimes for each operation of each plunger.

33. A press of the character described comprising unyielding pressurereceiving means, a plurality of plungers cotiperating therewith, togglemechanism to operate said plungers 111 sequence, a lever to support eachtoggle mechanism, and a sin le pressure means to control said levers andadapted to yield when a maximum plunger pressure is reached, saidsustaining means operating a 180 plurality of times during the cycle ofoperavtion of each plunger.

34:. A press of the character described comprising unyielding pressurereceiving means, a plurality of plungers coiiperating therewith, togglemechanism for each plunger and connections therewithto operate saidtoggle mechanisms in sequence, a lever supporting each toggle mechanism,a two part link supporting said levers, and a single 1.1

pressure means supporting said link and adapted to yield when a maximumplunger pressure is reached. I

'35. A press of the character described comprising unyielding pressurereceiving 1 means, a plurality of plungers coiiperating therewith,toggle mechanism for each plunger, connections therewith to operate thesame in sequence, interengaging levers to supportsaid toggle mechanismsrespec 0 tively, a two part link operatively con nected with theinterengaging portions of said levers, and a single pressure meanssupporting said link and adapted to yield when amaximum relativeposition of said mold and mold plunger pressure is cover; a moldplunger; a fixed throw pressure actuator; pressure transmission means totransmit a portion of the fixed throw of said pressure actuator to saidmold plunger toefiect compression of material in said mold; a fluid.containing cylinder to limit the pressure imparted to said mold plungerand to curtail the stroke thereof; reducing means connecting said fluidcylinder with said pressure transmission means, whereby pressureimparted by said pressure trans mission means to said reducing 'meansmaybe imparted in a reduced degree to said fluid cylinder; and automatictiming means to time the relative operation of said operating means andsaid fixed throw pressure actuator. j

375A press of the character described comprising pressure receivingmeans, a plurality of plungers cooperating therewith, maximum pressuresustaining means for said plungers adapted to yield when a maximumpressure is reached and to maintain a predetermined, uniform, maximumpressure, means to impart pressing action to said plungers in sequenceand ejecting means, actingin sequence, to eject the compressed material.

38. A press of the character described comprising unyielding pressurereceiving means, a plurality of'plungers cooperating therewith, maximumpressure sustaining means for said plungers adapted to yield whenamaxinium pressure is reached and to maintain a predetermined, uniform,maximum pressure, means to impart pressing action to said plungers insequence and ejecting means, acting in sequence, to eject the compressedmaterial.

39. A press of the character described comprising a fixed abutment, aplurality of mold members, plungers movable therein, a common means toimpart pressing movement to said plungers in sequence, ejecting meansacting in sequence to eject the material from the mold, and a singleyielding means to support the means for imparting pressing movement tothe plungers.

40. A press of the character described comprising a fixed abutment, aplurality of mold members, plungers movable therein, plunger operatingmechanism, connections therefrom to operate the same, in sequence,ejecting means acting in sequence to eject the material from the moldsand yielding supporting means to support said plunger operatingmechanism and adapted to yield when a maximum plunger pressure isreached, and to maintain a uniform, predetermined, maximum pressure.

41. A press of the character described comprising an abutment, aplurality of mold members, plungers movable therein, a .common means tooperate said plungers in sea predetermined maximum quence, ejectingmeans to impart ejecting movement to said plungers in sequence, andyielding means to support said plunger operating means and adapted toyield when pressure is reached and to maintain such pressure throughoutthe pressing action.

42. A press of the character described comprising an abutment, aplurality of molds, a movable mold feeding member for each mold,plungers movable in said molds, means for imparting movement in sequenceto said mold feeding members and to said plungers, and yielding means tosupport said plunger operating means and adapted to yield when apredetermined maximum pressure is reached and to maintain such pressurethroughout the pressing action. I

43. A, press 'of the character described comprising pressure receivingmeans, a plurality ofl plungers cooperating therewith,

maximum pressure sustaining means for said plungers, adapted to yieldwhen a maximum pressure is reached, but to sustain a predetermined,uniform, maximum pressure throughoutthe pressing action, and a commonplunger operating means to operate the same in sequence.

44. A press of the character described comprising pressure receivingmeans, a plurality of plungers cooperating therewith, maximum pressuresustaining means for said plungers, a common plunger operating means tooperate the same in sequence, and ejecting meansaeting in sequence toeject the pressed material adapted to yield whena maximum pressure isreached, but to sustain a predetermined, uniform, maximum pressurethroughout the pressing action.

45. A press of the character described comprising an abutment, a plungercooperating therewith, operating means therefor, positively acting meansoperative upon undue resistance being encountered in the pressing actionof said plunger, to render said operating means inactive, and mechanismdistinct from said plunger operating means and acting positively torender said operating means inactive upon the occurrence of undueresistance.

46. A press. of the character described comprising pressure receivingmeans, a plurality of plungers cooperating therewith, crank mechanismfor operating said plungers in sequence, and yielding means to supportsaid plunger operating means and adapted to yield when a maximum plungerpressure is reached but to maintain a maximum pressure throughout thepressing action.

47. A press of the character described comprising pressure receivingmeans, a plurality of plungers cooperating therewith, a

mold feeding member, a shaft, eccentric mechanism thereon, plungeroperating mechanism for impartmg during a single rotation of said shaft,pressing movement to each of said plungers, and yielding means tosupport said plunger operating means and adapted to yield when a maximumplunger pressure is reached.

48. A press of the character described comprising pressure receivingmeans,a plurality of plungers cooperating therewith, plunger operatingmeans to actuate each of said plungers, a mold feeding member, a singleoperating shaft, connections to distribute about said shaft the strainsincident to the operation of the plunger operating means, and yieldingmeans to support said plunger operating means and adapted to yield whena maximum plunger pressure is reached.

49. A press of the character described comprising an abutment, a seriesof molds, a series of plungers coiiperating therewith, maximum pressuresustaining means for said plungers adapted to yield when a maximumpressure is reached, butto maintain a predetermined, uniform, maximumpressure, movable mold feeding members, and means to impart in sequencepressing and ejecting movement to said plungers, and feeding movement tosaid mold feeding members.

50. A press of the character described comprising an abutment, a plungercooper ating therewith, operating means therefor, a drive shaft, drivingmechanism for the plunger normally fast thereon, an electric circuitnormally unbroken, and fluid pressure means whereby upon undueresistance being encountered by the plunger the circuit is interruptedand said operating means is rendered inactive.

51. A press of the character described comprising an abutment, a plungercooperating therewith, operating means therefor including a drive shaftand driving mechanism thereon, and electrically controlled fluidpressure means for renderingsaid operating means inactive upon undueresistance being encountered by the plunger.

52. A press of the character described comprising an abutment, a plungercooperatingtherewith, operating means therefor, a drive shaft, drivingmechanism thereon, an electric circuit, a spring to maintain the samenormally unbroken and adapted upon the plunger encountering undueresistance to be compressedto break the circuit and elastic fluidactuated connections whereby upon the circuit being broken saidoperating means for the plunger is rendered inactive.

58. A. press of the character described comprising an abutment, aplunger cooperating therewith, operating means therefor, a drive shaft,a driving gear thereon and normally clutched thereto, fluid pressuremeans tending to unclutch said driving gear, and electrically controlledmeans to render said. fluid pressure means ineffective under normalworking conditions.

baa

54. A press of the character described comprising an abutment, aplungercooperating therewith, a movable mold feeding member to feed materialinto the range ofmovement of the plunger, a mold emptying member,.moldemptying member operating means, and means whereby said mold empty- 1ngmember operating means is rendered inactive if undue resistance beencountered means. lun 'er o eratin mechanism a single pressure means tocontrol a plurality'of plungers and adapted to yield when a maximumplunger pressure is reached and means whereby said mold feeding membersare rendered inactive if undue resistance be encountered thereby.

56. A. press of the character described comprising an abutment, acooperating plunger, a delivery sweep arm to deliver material from thepress and means for imparting delivery movement thereto in one plane,and return movement thereto in a different plane.

57. A press of the character described comprising an abutment, acooperating plunger, a shaft having material delivering means thereon,means to impart rotative movement to said shaft to deliver the materialfrom the press, and means to impart axial movement to said shaft.

58. A press of the character described comprising an abutment, acooperating plunger, a receiver whereon the pressed material isdelivered, delivery means to sweep the material across the face of saidreceiver, and mechanism to impart return movement to said delivery meansbeneath said face of the receiver.

59. A press of the character described.

terial in said mold; an elastic fluid contain ing cylinder to lnnit thepressure transmit-I ted to said mold plunger and to curtail the strokethereof; reducingmeans connecting parted by said pressure transmissionmeans to said reducing means may be imparted in a reduced degree to saidelastic fluid cylinder; and automatic timing means to time 1 therelative operation of said operating means and said fixed throw pressureactuator.

61 A press of the character described comprising a fixed abutment, aplunger cooperating therewith, plunger operating means adapted to imparta plunger stroke of gradually diminishing speed and gradually increasingforce and maximum pressure determining means permitting an extendedperiod of dwell at the limit of the compressing stroke of the plunger,and mechanism to impart a positive movement to .said operating means inboth directions.

I 62. A press of the character described comprising an abutment, aplunger cooperating therewith, and a mold member having a removableliner back, said liner back having thereon a plurality of liners, saidliner back being of such extended area that said liners may .be attachedthereto with but a single liner in operative relation to the press,another liner being exposed whereby the same may be removed from theliner backduring the operation of the press.

63. 'A press of the character described comprising an abutment, aplunger cooper ating therewith, a mold member having a removable linerback, said liner back being elongated and having secured thereto inlongitudinal alinement a plurality of removable liners, whereby whileone liner is in effective relation to the press another liner is exposedand in position for removal from the liner back during the operation ofthe press.

(34. A press of the character described,

comprising an abutment, a plunger cooperating therewith, a mold memberhaving opposite removable side liner backs, each liner back beingelongated to receive thereon removable longitudinally arranged liners,

, whereby one liner of each back may bein operative relation to-the moldmember and another liner may be exposed for removal during the operationof the'press.

6; A press of the character described comprising unyielding pressurereceiving means, a plurality of plungers cooperating therewith,operating mechanism for each plunger and connections therewith tooperate said toggle mechanisms in sm uence, a

yielding support for each plunger operating mechanism, a two part linksustaining said 'yielding supports and a single pressure meanssupporting said link and adapted to yield when a maximum plungerpressure is reached.

(36. A press of the character described comprising an abutment, aplunger cooperating therewith, operating means therefor,

and means distinct from said plunger and its operating means operativeupon undue resistance encountered in the pressing action of saidplunger'to render said operating means inactive by withdrawing a portionthereof from operative position.

67. A press comprising in combination a mold; a mold cover held againstmovement pression of material in said mold; a fluid' containing cylinderto limit the pressure transmitted to said mold plunger and to curtailthe stroke thereof; reducing means connecting said fluid cylinder withsaid pressure transmission means, whereby pressure imparted by saidtransmission means to said pressure reducing means may be im-- parted mareduced degree to said fluld cyl-' inder; and automatic timing means totime the relative operation of said mold opening means and said fixedthrow pressure actuator.

(38. A press of the character described comprising fixed abutments,plungers movable .relatively thereto, operating means therefor, movablemold feeding members a between said abutments and plungers, and a singleelastic fluid actuated pressure means to control a plurality of plungersand adapted to yield when a maximum plunger pressureis reached, butadapted to maintain a predetermined, uniform, maximum pressurethroughout the pressing action.

69. A press comprising in combination a mold; a mold cover; operatingmeans to change the relative position of said mold and mold cover; amold plunger; a pressure actuator; pressure transmission means totransmit a portion of the throw of said pressure actuator to said moldplunger to effect compression of material in said mold; a fluidcontaining cylinder to absorb further throw of said pressure actuatorand to ourtail the movement of said plunger; pressure reducing meansconnecting said fluid cylinder with said pressure transmission means,whereby pressure imparted by said pressure transmission means tosaidpressure reducing means may be imparted in a. reduced de- 'abutment;a mold; a plunger reriprocable in said mold to compress materialresisted by said abutment; pressure aetuatlng means;

